What is the current state of the law on the issue of ripeness?

⁵ See Reno v. Catholic Soc. Servs., Inc., 509 U.S. 43, 57 n.18, 113 S.Ct. 2485, 125 L.Ed.2d 38 (1993) ("Even when a ripeness question in a particular case is prudential" the court "may raise it on [its] own motion and cannot be bound by the wishes of the parties. ") (citing Reg'l Rail Reorganization Act Cases, 419 U.S. 102, 138, 95 S.Ct. 335, 42 L.Ed.2d 320 (1974) )